Answer:
see below
Explanation:
The effect of step 1 shows up in step 2: the variable term is by itself on the left.
The difference between answer choices A and D is somewhat subtle. The goal of the solution process is to isolate the variable. Step 1 is a step on the path to doing that. What it actually does is isolate the variable term, as described by choice D.
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The variable is isolated by dividing by its coefficient in Step 3.